http://www.etrma.org/tyres/retreading/eu-regulatory-framework [последно преглеждане на 12 юли 2018 г.].
Na web-mjestu ETRMA-e nalaze se brošure za 2016. i 2017.Vidjeti http://www.etrma.org/uploads/Modules/Documentsmanager/20180329---statistics-booklet-2017---alternative-rubber-section-final-web.pdf.